title: [Abortions of unknown etiology and Rh blood groups].
mesh_terms: D000028:Abortion, Induced / Q000209:etiology*; D000022:Abortion, Spontaneous; D005260:Female; D006801:Humans; D011247:Pregnancy; D012204:Rh-Hr Blood-Group System
chemical_list: D012204:Rh-Hr Blood-Group System
keywords: ABORTION/etiology and pathogenesis; RH FACTOR
vernacular_title: Ungeklärte vorzeitige Schwangerschaftsbeendigung und Rh/rh Blutgruppensystem.